On average, an adult person breathes in about 6 liters of air per minute. assuming atmospheric pressure and 20°c air temperature, estimate the mass of air in kilograms that a person breathes in per day.

The problem can be covered from different methods for development. I will approximate it by the proximity method. We know that the person breathes about 6 liters per minute, that is (Recall that )

Given the conditions, we have that at atmospheric pressure with a temperature of 20 ° C the air density is

Therefore, from the density ratio, the mass would be

Here,

m = mass per time unit

V = Volume per time unit

= Density

We have

Using the conversion factor from minutes to days,

Therefore he mass of air in kilograms that a person breathes in per day is 10.7136kg